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发表于 2018-7-20 14:26:25
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At this point, with the system running properly, the Expeller and Expander/Dryer motor “Motor Load Relays” should be set for “Low” and “High” values (supplied by AIC only if our control system is included in the equipment scope). The alarm system will alert the operator of any changes in the crumb feed rates. If motor load to the Expeller decreases, the Expeller “Low Current” will alarm, warning the operator that the feed rate has changed and that appropriate steps to stabilize the system should be taken. In the case of the Expander/Dryer “Low Current” alarm, the operator may find that the Expander/Dryer hopper is blocked and he must initiate a “Controlled” shutdown of the system before an “Over-Temperature” condition results in the Expander/Dryer barrel. An “Over-Temperature” condition in the barrel can quickly cause fires at the die plate, the Hot Box or downstream of the Hot Box. “Over Current” alarms typically indicate an increase in capacity. |
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